Electric scale for accurate lard-weighing.



No- 809,026. PATENTED JAN. 2, 1906. C: E. CNYPP. ELECTRIC SCALE FORACCURATE LARD WEIGHING.

APPLICATION FILED IUNE25,1903.

WITNESSES; @Za/r [LVVEJV T0]? 7 gown! 4,4,9 1 I A TTORNE y. I

UNITED STATES PATENT OFFICE.

CHARLES EDWARD SNYPP, OF GRETN A, LOUISIANA, ASSIGNOR TO THE SOUTHERNCOTTON OIL COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEIVJERSEY.

ELECTRIC SCALE FOR ACCURATE LARD-WEIGHING.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed June 25,1903. Serial No, 163,066.

To all whom it may concern:

Be it known that I, CHARLES EDWARD SNYPP, a citizen of the United Statesof America, and a resident of Gretna, in the parish of Jefferson andState of Louisiana, have invented certain new and useful Improvements inElectric Scales for Accurate Lard-VVeighing, of which the following is aspecification.

My invention relates to certain new and useful improvements in electricscales and weighing devices for the gaging and weighing of specificquantities of lard and other similar substances, such as can be directedinto packages by gravity or under pressure, the object of the inventionbeing to insure accuracy in weighing; and itconsists, essentially, in anautomatic instantaneous cut off mechanism whereby the substance flowinginto the cans or other packages can be instantly cut off when therequisite amount has been drawn from the source of supply, and, also, itconsists in numerous details and peculiarities in the construction andcombination, including a pressure-controlling device, substantially ashereinafter described and claimed.

The annexed drawing has a single figure, which illustrates my improvedelectric scale for accurate lard-weighing in side elevation.

A denotes any ordinary or well-known scale as, for instance, a commontrip-balance grocery-scale--the same having the platforms at a. Thisscale, however, is given simply by way of illustration.

B represents a lard bucket or package adapted to be placed on thescale-platform a to receive the lard or other substance to be weighed asdrawn from the source of supply by a pipe or conduit C, having a branchC, provided with a delivery-nozzle c, which delivers into the bucket orpackage B. Heretofore it has been the common practice in lard-weighingto conduct or regulate the passage of the lard in pipe C by means of ahand-valve adapted to be turned on or shut off at the will of theoperator accordingly as the scale might indicate. With mypresentimprovements, however, this work is done automatically, so thataccuracy in the result is promoted and assured.

E designates an electromagnet operating by induction. In the pipe C is avalve D, working in conjunction with a valve-seat (Z, the valve and seatbeing a short distance from the delivery-nozzle 0. Valve D is providedwith a rod L, pivoted to a lever M, whose fulcrum is at m. A spring N isattached to the free end of lever M and also to a fixed point andoperates to draw the lever M away from the electromagnet E. When sodrawn away, lever M abuts against the fixed stop a. Obviviously when theelectromagnet E is energized and the lever M is drawn against it thevalve D, through the movement of the valve-rod L, will be closed.

F denotes a wire leading from electromagnet E to an arm H on thescale-beam it, said arm I-I having a contact-finger I. Another wire Crleads from the electromagnet E to the contact-finger z'. The two fingersI and t are adapted to come into contact with each other when the scaletips. The current is automatically turned on by the slightest movementof the scale. IVhen the bucket or package B has received its specificquantity, the scale moves, makes contact between the fingers I and i,closes thereby the current and causes the electromagnet E to act on thelever M, whereby the valve D is instantaneously closed and the supply oflard or other substance cut off. Obviously by the proper adjustment ofthe scale-weights this cut-01f may be made to take place when anydesired quantity of lard has been deposited in the package. As soon asthe filled package is removed from the scaleplatform the spring N willrestore the lever M to-its normal position, which will cause the valve Dto be opened for the purpose of enabling a new package to be filled.

It becomes necessary in feeding lard to a weighing device to control thepressure in the supply-pipe wherever there is a variation in thepressure of the lard or material to be weighed. Hence I provide apressure-controlling device consisting of a valve O in the supply-pipeC, adjacent to which valve O is a casing P, containing a plunger Q,acted on by a springp, tensionedagainst a rigid frame P. To this spring2) is connected a bell-crank lever R, which is pivotall y attached to avalverod S, carrying a valves, which works in conjunction with a seat s,arranged in the pipe C. This pressure device therefore automaticallycontrols the amount of lard discharged into the package B by controllingthe pressure at the delivery-orifice and makes the amount of larddischarged constant regardless of the pressure above thedelivery-orifice.

' pipe U becomes excessive and the velocity and force of delivery of thelard in the package becomes greater, the plunger Q Will act inconsequence of the lard pressing on the area of its end, therebycompressing springp and through the lever R and rod S closing the valve8, so as to cut ofi a portion of the lard, diminish the quantitypassing, and thus keep the flow constant.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. In a device for Weighing lard and automatically cutting oil the flowthereto, the com bination With a scale, of a feed-pipe, a valve in saidpipe having a valve-rod, a pivoted lever connected to said rod, a springattached to the end of the lever and acting to open the Valve, anelectromagnet arranged in connection With said lever and operating toclose the valve, and an electric circuit having contacts, one of Whichis on the scale, so that the circuit'may be closed to close the valvewhen the required delivery of lard or similar material has passed saidvalve, the movement of the scale thus controlling the magnet.

2. The combination With a scale, of a feedpipe for delivering lard orsimilar substance to a receptacle on the scale, a valve in said pipecontrolled by an electric circuit which is itself controlled by themovements of the scale, and a pressure-valve likewise in the feed-pipe,together With a pressure-controlling mechanism consisting essentially ofa spring-plunger acted on by the pressure in the supply-pipe and openingand closing the aforesaid valve so as to make the quantity of the Howcon stant.

Signed at Gretna, Louisiana, this 20th day of June, 1903.

CHARLES EDl/VARD SNYPP.

Vitnesses:

DAVID SCHWARTZ, DAVID F. BROWN.

